Semiconductor dies with recesses, associated leadframes, and associated systems and methods

ABSTRACT

Semiconductor dies with recesses, associated leadframes, and associated systems and methods are disclosed. A semiconductor system in accordance with one embodiment includes a semiconductor die having a first surface and a second surface facing opposite from the first surface, with the first surface having a die recess. The system can further include a support paddle carrying the semiconductor die, with at least part of the support paddle being received in the die recess. In particular embodiments, the support paddle can form a portion of a leadframe. In other particular embodiments, the support paddle can include a paddle surface that faces toward the semiconductor die and has an opening extending through the paddle surface and through the support paddle.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims foreign priority benefits of SingaporeApplication No. 200705420-8 filed Jul. 24, 2007, which is incorporatedherein by reference in its entirety.

TECHNICAL FIELD

The present disclosure is directed generally to semiconductor dies withrecesses, associated leadframes, and associated systems and methods.

BACKGROUND

Semiconductor processing and packaging techniques are continuallyevolving to meet industry demands for devices with improved performanceand reduced size and cost. Electronic products require packagedsemiconductor assemblies with a high density of devices in a relativelysmall space. For example, the space available for memory devices,processors, displays and other semiconductor devices is continuallydecreasing in cell phones, personal digital assistants, laptop computersand many other products. Accordingly, a need exists to increase thedensity of semiconductor devices and components within the confinedfootprint of a semiconductor assembly. One technique for increasing thedensity of semiconductor devices within a given footprint is to stacksemiconductor dies. A challenge with this technique, however, isproviding adequate electrical interconnects within and between thestacked dies.

One approach to addressing the challenges associated with stackedsemiconductor dies is to use a leadframe having a support paddle thatsupports the lowest die, and leadfingers that provide electricalconnections between the stack of dies and devices external to thefinished package. While this arrangement has proven to be suitable formany purposes, the continual pressure to reduce not only the footprintof the package but also the overall volume of the package has createdthe need for still smaller and more efficiently packaged dies.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a partially schematic, cross-sectional side elevation view ofa portion of a package configured in accordance with an embodiment ofthe disclosure.

FIG. 2 is a partially schematic, exploded plan view illustration ofpackage components, including a semiconductor die and a leadframe havingleadfingers and a support paddle configured in accordance with anembodiment of the disclosure.

FIG. 3 is a partially schematic, exploded plan view illustration of asemiconductor die and a leadframe having a support paddle configured inaccordance with an embodiment of the disclosure.

FIG. 4 is a partially schematic, exploded plan view illustration of asemiconductor die and a leadframe having a support paddle configured inaccordance with an embodiment of the disclosure.

FIG. 5 is a flow diagram illustrating methods for packagingsemiconductor dies in accordance with several embodiments of thedisclosure.

FIG. 6 is a partially schematic, block diagram illustrating a system inwhich packages may be incorporated in accordance with still furtherembodiments of the disclosure.

DETAILED DESCRIPTION

Several embodiments of the present disclosure are described below withreference to packaged semiconductor devices and assemblies, and methodsfor forming packaged semiconductor devices and assemblies. Many detailsof certain embodiments are described below with reference tosemiconductor dies. The term “semiconductor die” is used throughout toinclude a variety of articles of manufacture, including for example,individual integrated circuit dies and/or dies having othersemiconductor features. Many specific details of certain embodiments areset forth in FIGS. 1-6 and the following text to provide a thoroughunderstanding of these embodiments. Several other embodiments can havedifferent configurations, components and/or processes than thosedescribed in this section. A person skilled in the relevant art,therefore, will appreciate that additional embodiments may be practicedwithout several details of the embodiments shown in FIGS. 1-6.

FIG. 1 is a partially schematic, cross-sectional view of a system 100that includes a package 101 (a portion of which is shown) configured inaccordance with a particular embodiment. The package 101 can include aleadframe 130 having a support paddle 131 carrying one or moresemiconductor dies 110. For purposes of illustration, the leadframe 130is shown carrying four stacked semiconductor dies 110, shown as first,second, third and fourth semiconductor dies 110 a, 110 b, 110 c, and 110d, respectively. In other embodiments, the leadframe 130 can carry moreor fewer dies 110, for example, a single die 110 or two stacked dies110. In any of these embodiments, the die(s) 110 can include one or morerecesses 114 that receive the support paddle 131, as described infurther detail below.

In an embodiment shown in FIG. 1, each of the dies 110 has a first(e.g., downwardly facing) die surface 111, and a second (e.g., upwardlyfacing) second die surface 112. The illustrated first die surface 111includes two recesses 114, one along each of two opposing edges of thefirst die surface 111, and one of which is visible in FIG. 1. Therecesses 114 can locally reduce a thickness T of the die 110. Suitabletechniques for cutting the recesses 114 in the dies 110 are included inU.S. Pat. No. 7,218,001, assigned to the assignee of the presentapplication and incorporated herein by reference. In the arrangementshown in FIG. 1, at least part of the support paddle 131 is received inthe recess 114 of the first die 110 a. In a particular embodiment, therecess 114 is deep enough so that a first paddle surface 133 (e.g., anoutwardly facing surface) is flush with or recessed from the first diesurface 111. Accordingly, the addition of the support paddle 131 beneaththe first die 110 a does not add to the overall thickness T of the firstdie 110 a alone. The support paddle 131 can further include a secondpaddle surface 134 that faces into the recess 114 and away from thefirst paddle surface 133. A paddle adhesive 135 can adhesively bond thesupport paddle 131 to surfaces 115 of the recess 114.

In a particular embodiment, the overall thickness of the first die 110 acan be about 120 microns, and the recess 114 can have a depth of about60 microns. The combined thickness of the support paddle 131 and thepaddle adhesive 135 can be about 60 microns or less, so that the firstpaddle surface 133 is flush with or recessed from the adjacent first diesurface 111. In other embodiments, the foregoing features can havedifferent dimensions, while the support paddle 131 still does not add tothe overall thickness T of the die 110 a and the support paddle 131combined. In still further embodiments, the support paddle 131 can beonly partially received in the recess 114, so that it protrudes, inpart, from the recess 114. In such instances, the support paddle 131does add to the overall thickness of the die 110 a and the supportpaddle 131 combined, but not as much as if the recess 114 were notpresent.

When the package 101 includes multiple dies 110, the additional dies canbe stacked on the first die 110 a and attached with corresponding layersof die adhesive 116. The layers of die adhesive 116 can be relativelythin to reduce the overall package thickness and/or the likelihood forthermal conductivity mismatches resulting from differing coefficients ofthermal expansion. Each of the dies 110 can include a bond site 113located proximate to and accessible from the second die surface 112. Thebond sites 113 and the recesses 114 of the stacked dies 110 can bearranged so that the recesses 114 of an upper die (e.g., the second die110 b) lie directly over corresponding bond sites 113 of the next lowerdie (e.g., the first die 110 a) in the stack. Accordingly, the recesses114 of the upper dies can house, accommodate and/or receive electricalconnections between the leadframe 130 and the bond sites 113 of thelower die.

To support electrical connections to the semiconductor dies 110, theleadframe 130 includes leadfingers 132 that extend inwardly toward thedies 110. Individual leadfingers 132 can be connected to correspondingbond sites 113 of the dies 110 with wire bonds 103. When the package 101includes multiple dies 110, an individual leadfinger 132 may beconnected to corresponding bond sites 113 of each of the dies 110. Therecesses 114 can reduce or eliminate the likelihood for the wire bonds103 to contact the semiconductor die 110 in which the recesses 114 areformed.

Multiple leadfingers 132 may be arranged side by side in a directionextending transverse to the plane of FIG. 1, and may accordingly form aleadfinger plane L, an edge of which is visible in FIG. 1. The supportpaddle or paddles 131 may extend in a direction generally transverse tothe plane of FIG. 1 and may accordingly form a paddle plane P. In aparticular embodiment, the leadfinger plane L is offset from the paddleplane. P in a direction generally aligned with the thickness dimension Tof the dies 110. This arrangement can reduce the length of the wire bond103 required to connect the leadfinger 132 to the furthest die (e.g.,the fourth die 110 d). In other embodiments, the leadfinger plane L andthe paddle plane P can have arrangements other than that shown inFIG. 1. For example, when the package 101 includes only the first die110 a, the leadfinger plane L may be coplanar with the paddle plane P.In any of these arrangements, once the electrical connections betweenthe leadframe 130 and the die(s) 110 are formed, the die(s) 110, thewire bonds 103, the support paddle 131, and the leadfingers 132 can beat least partially encapsulated with an encapsulant 102. Portions of theleadfingers 132 that project outwardly from the encapsulant 102 can thenbe trimmed, shaped, and/or otherwise formed to provide connections toexternal components.

FIG. 2 is a partially exploded, schematic plan view illustration ofcomponents of an embodiment of the package 101, including the leadframe130 and the first die 110 a shown in FIG. 1. The leadframe 130 can beformed from a unitary thin sheet of conductive material (e.g., gold),using a stamping process or another suitable process. The leadframe 130includes a frame member 136, which temporarily carries the inwardlyextending leadfingers 132 and the support paddle 131. The support paddle131 is positioned inwardly from the leadfingers 132 and is supportedrelative to the frame member 136 by removable ties 137. In thisparticular embodiment, the support paddle 131 includes a paddle surface138 that is divided over a first portion 139 a and second portion 139 b.Accordingly, the paddle surface 138 is discontinuous in this embodiment.When the first semiconductor die 110 a is inverted and positioned facedown on top of the frame member 136 (as indicated by arrow A), each ofthe recesses 114 is aligned with and receives a corresponding one of thefirst and second portions 139 a, 139 b. The bond sites 113 (FIG. 1) onthe second die surface 112 are then electrically connected to theleadfingers 132 at corresponding leadfinger bond sites 141 e.g., usingstandard wire bonds, or other suitable conductive couplers. If furtherdies are to be stacked on the first die 110 a, each one is stacked andconnected to the leadfingers 132 before the next die is stacked andelectrically connected to the leadframe 130. After all the dies havebeen stacked and electrically connected to the leadframe 130, theassembly is placed in a mold and encapsulated, after which the framemember 136, the ties 137 and (optionally) portions of the leadfingers132 are removed.

In a particular embodiment of the arrangement shown in FIG. 2, theleadframe 130 includes an opening 140 between the first and secondportions 139 a, 139 b. The first and second portions 139 a, 139 b can beelongated so as to fit into the corresponding elongated recesses 114 ofthe first semiconductor die 110 a. Because the first die 110 a isrectangular and the recesses 114 are aligned with opposing edges of thefirst semiconductor die 110 a, the first and second portions 139 a, 139b of the support paddle 131 can also be aligned generally parallel toeach other. In other embodiments, the leadframe 130 can have otherarrangements that also support one or more semiconductor dies 110.Representative arrangements are described below with reference to FIGS.3 and 4.

Beginning with FIG. 3, a leadframe 330 in accordance with anotherembodiment includes a frame member 136 and leadfingers 132 arrangedgenerally similarly to the corresponding components described above withreference to FIG. 2. The leadframe 330 further includes a support paddle331 having four spaced apart portions 339 (shown as first, second, thirdand fourth portions 339 a, 339 b, 339 c, and 339 d, respectively)positioned around a central opening 340. Each of the portions 339 a canbe connected to the frame member 136 with a corresponding tie 337. Thefirst semiconductor die 110 a can include elongated recesses 114 (shownin dashed lines) generally similar to those shown in FIG. 2 so as toaccommodate and receive the portions 339 a-339 d of the support paddle331. In another embodiment, the first semiconductor die 110 a caninstead include four separate recesses 314 a-314 d, each positioned at acorner of the first die 110 a to receive a corresponding one of thesupport paddle portions 339 a-339 d. The support paddle portions 339a-339 d can be arranged symmetrically, e.g., so that a diagonal lineconnecting the first and third portions 339 a, 339 c bisects a diagonalline connecting the second and fourth portions 339 b, 339 d. In otherembodiments, the paddle portions 339 can have other symmetric orasymmetric arrangements.

FIG. 4 illustrates a leadframe 430 that carries a correspondingsemiconductor die 410 in accordance with another embodiment. Theleadframe 430 can include a frame member 436 that carries inwardlyextending leadfingers 432 and a unitary support paddle 431. The supportpaddle 431 can have a central opening 440, and can be temporarilysupported relative to the frame member 436 with ties 437. Accordingly,the support paddle 431 can have a shape generally similar to a pictureframe, and in a particular embodiment, can have four portions 439 a-439d that are integrally connected to form a unitary structure. Thecorresponding semiconductor die 410 includes a corresponding recess 414positioned around its periphery to mirror the arrangement of the supportpaddle 431. Accordingly, when the semiconductor die 410 is inverted andplaced on the leadframe 430, the generally frame-shaped support paddle431 is received in the generally framed-shaped recess 414 of thesemiconductor die 410, and the central portion of the semiconductor die410 is received in the central opening 440 of the leadframe 430.

FIG. 5 is a flow diagram of a process 500 for forming packagedsemiconductor devices in accordance with several embodiments. Forpurposes of illustration, features of several embodiments are showntogether in FIG. 5. It will be understood by one of ordinary skill inthe relevant art that further particular embodiments may be practicedwith fewer than all the steps identified in FIG. 5, and that in otherembodiments, additional steps may be performed in addition to thoseidentified in FIG. 5.

Process portion 501 includes positioning a semiconductor die and aleadframe proximate to each other. In process portion 502, a supportpaddle is received in a recess of the semiconductor die. For example, asupport paddle or support paddle portion having any of theconfigurations described above with reference to FIGS. 1-4 be can bereceived in one or more corresponding recesses of a semiconductor die.

Process portion 503 includes positioning a support paddle (having apaddle surface with an opening extending through it) relative to thesemiconductor die. Process portion 503 can be performed in addition toor in lieu of process portion 502. For example, in the context of thearrangements describe above with reference to FIGS. 1-4, the opening inthe support paddle can allow the support paddle to be positioned so thatthe paddle surface is received or partially received in one or morerecesses of the die. However, in other embodiments, a paddle having anopening extending through it can support a semiconductor die withoutnecessarily having the support surfaces received in a recess of the die.

In any of the foregoing embodiments, the support paddle can be attachedto the die (process portion 504), and the die can be electricallyconnected to leadfingers (process portion 505). In process portion 506,the die, the leadfingers, and/or the support paddle can be encapsulatedto protect these components. In process portion 507, a frame member,which may temporarily support the leadfingers and the support paddlerelative to the die, can be removed, typically after the encapsulationprocess has been completed.

One feature of semiconductor packages configured and/or manufactured inaccordance with at least some of the foregoing embodiments describedabove with reference to FIGS. 1-5 is that they include support paddlesreceived in one or more recesses of a corresponding semiconductor die.This arrangement can reduce the overall thickness of the semiconductorpackage because the thickness of the support paddle is not cumulative tothe thickness of the semiconductor die. Instead, the support paddle canbe fully or partially recessed into the adjacent surface of the die. Thepresence of the recesses in the die can allow the overall thickness ofthe die to remain relatively high (e.g., above 100 microns) withoutadding to the overall thickness of the combined die/support paddle. Dieshaving a thickness in the foregoing range can have good refresh marginsand/or read/write speeds, without compromising on the compact (e.g.,thin) profile of the packaged dies. In further particular embodiments,the support paddles can form part of an overall leadframe that alsoincludes leadfingers for electrical connections to the semiconductordie. Accordingly, the leadframe can provide both the low-profile supportdescribed above, and electrical connections with external devices.

Another feature of at least some of the foregoing embodiments is thatthe support paddle can include multiple paddle surfaces separated by anopening. As a result, the amount of material required to form thesupport paddle can be reduced when compared to a conventional paddlethat has a solid geometry generally mirroring the footprint of the diethat it supports. Reducing the amount of material for the support paddlecan reduce the cost of the paddle and therefore the cost of thecompleted package. Despite the reduction in the size of the supportpaddle 131, the combination of the support paddle 131, the ties 137 andthe leadframe 130 provide adequate support to the semiconductor die ordies they carry during the wire bond and encapsulation steps

Any of the semiconductor packages described above with reference toFIGS. 1-5 can be incorporated into any of a myriad of larger and/or morecomplex systems, a representative example of which is a system 600 shownschematically in FIG. 6. The system 600 can include a processor 602, amemory 604 (e.g., SRAM, DRAM, flash memory and/or other memory device),input/output devices 606 and/or other subsystems or components 608.Semiconductor packages having any one or a combination of the featuresdescribed above with reference to FIGS. 1-5 may be included in any ofthe components shown in FIG. 6. The resulting system 600 can perform anyof a wide variety of computing, processing, storage, sensing, imagingand/or other functions. Accordingly, the representative system 600includes, without limitation, computers and/or other data processors,for example, desktop computers, laptop computers, Internet appliances,hand-held devices (e.g., palm-top computers, wearable computers,cellular or mobile phones, personal digital assistants, music players,etc.), multi-processor systems, processor-based or programmable consumerelectronics, network computers and mini computers. Other representativesystems 600 may be housed in a single unit or distributed over multipleinterconnected units (e.g., through a communication network). Thecomponents of the system 600 can accordingly include local and/or remotememory storage devices, and any of a wide variety of computer readablemedia.

From the foregoing, it will be appreciated that specific embodimentshave been described herein for purpose of illustration, but that theforegoing systems and methods may have other embodiments as well. Forexample, while the leadfingers and support paddles were described abovein the context of a generally uniform and continuous leadframe, andaccordingly have similar or identical material properties, in otherembodiments, the leadfingers and the paddle supports can have differentcompositions, and/or non-unitary arrangements. The support paddles canhave shapes and/or arrangements other than those specifically describedabove, for example, opposing “C” shaped support portions, more than foursupport portions, and/or others. The support paddle can be secured tothe die with arrangements other than those shown in the Figures, e.g., athin film that extends over both the support paddle and the adjacent(flush or semi-flush) die surface.

Certain features described in the context of particular embodiments maybe combined or eliminated in other embodiments. For example, several ofthe embodiments described above were described in the context of paddlesupports received in recesses of corresponding semiconductor dies, butin other embodiments, the paddle supports can include multiple spacedapart portions, or openings between paddle support portions, withoutnecessarily being received in recesses of corresponding semiconductordies. In another example, the semiconductor die shown in FIG. 4 can beused with the support paddles shown in FIGS. 1-3. Further, while certainadvantages may be associated with certain embodiments, other embodimentsmay also exhibit such advantages, and not all embodiments neednecessarily exhibit such advantages. Accordingly, the disclosure caninclude other embodiments not shown or described above.

1. A semiconductor system, comprising: a semiconductor die having afirst surface and a second surface facing opposite from the firstsurface, the first surface having a die recess; and a support paddlecarrying the semiconductor die, the support paddle being at leastpartially received in the die recess.
 2. The system of claim 1 wherein:the semiconductor die is a first semiconductor die, and the die recessis one of two elongated die recesses extending along opposing edges ofthe first surface; the support paddle includes two spaced apart paddleportions, one received in each of the two die recesses, with each paddleportion being flush with or recessed from the first surface of thesemiconductor die external to the die recesses; the first semiconductordie has bond sites accessible from the second surface; and the systemfurther comprises: a second semiconductor die stacked relative to thefirst semiconductor die, the second semiconductor die having a firstsurface facing toward the first semiconductor die, a second surfacefacing away from the first surface, and two elongated die recessesextending along opposing edges of the first surface of the secondsemiconductor die; and wire bonds received in the recesses of the secondsemiconductor die and connected to the bond sites of the firstsemiconductor die.
 3. The system of claim 1 wherein the support paddlehas a first surface generally flush with or recessed from the firstsurface of the semiconductor die external to the recess, and wherein thesupport paddle has a second surface facing opposite the first surface ofthe support paddle and toward the semiconductor die.
 4. The system ofclaim 1 wherein the semiconductor die includes multiple recesses, andwherein the support paddle includes multiple portions received inindividual recesses.
 5. The system of claim 4 wherein the semiconductordie includes a first elongated recess positioned along a first edge ofthe semiconductor die and a second elongated recess positioned along asecond recess of the semiconductor die.
 6. The system of claim 5 whereinthe support paddle includes a first elongated portion received in thefirst recess and a second elongated portion received in the secondrecess.
 7. The system of claim 5 wherein the support paddle includesfirst and second spaced apart portions received in the first recess, andthird and fourth spaced-apart portions received in the second recess. 8.The system of claim 1 wherein the semiconductor die includes acontiguous recess adjacent a periphery of the semiconductor die, andwherein the support paddle includes a contiguous, generally frame-shapedsupport surface having a central opening and being received in thecontiguous recess of the semiconductor die.
 9. The system of claim 1,further comprising an encapsulant disposed around at least a portion ofthe semiconductor die and at least a portion of the support paddle. 10.The system of claim 1 wherein the semiconductor die includes multipledie bond sites, and wherein the system further comprises multipleleadfingers having leadfinger bond sites, with individual leadfingerbond sites connected to corresponding die bond sites via wire bonds,wherein the leadfingers and the support paddle have a generallyidentical composition.
 11. The system of claim 1 wherein thesemiconductor die is a first semiconductor die having firstsemiconductor die bond sites, wherein the die recess is a first dierecess, and wherein the system further comprises: a second semiconductordie stacked relative to the first semiconductor die, the secondsemiconductor die having a first surface and a second surface facingopposite from the first surface, the first surface of the secondsemiconductor die having a second die recess; and a plurality ofleadfingers having leadfinger bond sites, with individual leadfingerbond sites connected to corresponding die bond sites of the firstsemiconductor die via wirebonds that are received in the second dierecesses of the second semiconductor die.
 12. The system of claim 1,further comprising a computing device having at least one of aprocessor, a memory and an input/output device, and wherein thesemiconductor die and the support paddle are included as a component ofat least one of the processor, the memory, and the input/output device.13. A semiconductor system, comprising: a leadframe that includes: aframe member; a plurality of leadfingers connected to and extendinginwardly from the frame member; and a support paddle positioned inwardlyfrom the leadfingers, the support paddle having: a first paddle portionconnected to and positioned inwardly from the frame member, the firstpaddle portion having a first support surface positioned to carry asemiconductor die; and a second paddle portion connected to andpositioned inwardly from the frame member, the second paddle portionbeing spaced apart from the first paddle portion and having a secondpaddle support surface spaced apart from and discontinuous with thefirst paddle support surface and positioned to carry the semiconductordie.
 14. The semiconductor system of claim 13, further comprising: athird paddle portion connected to and positioned inwardly from the framemember, the third paddle portion being spaced apart from the first andsecond paddle portions and having a third paddle support surface spacedapart from the first and second paddle support surfaces and positionedto carry the semiconductor die; and a fourth paddle portion connected toand positioned inwardly from the frame member, the fourth paddle portionbeing spaced apart from the first, second and third paddle portions andhaving a fourth paddle support surface spaced apart from the first,second and third paddle support surfaces and positioned to carry thesemiconductor die.
 15. The system of claim 14 wherein the first, second,third and fourth paddle support surfaces are generally co-planar. 16.The system of claim 14 wherein a diagonal line between the first andthird paddle support surfaces bisects a diagonal line between the secondand fourth paddle support surfaces.
 17. The system of claim 13 whereinthe first and second paddle portions are elongated along generallyparallel axes.
 18. The system of claim 13 wherein the first and secondpaddle portions are elongated along generally parallel axes, spacedapart from each other by an opening.
 19. A semiconductor leadframe,comprising: a frame member; a plurality of leadfingers connected to andextending inwardly from the frame member; and a support paddlepositioned inwardly from the leadfingers, the support paddle having apaddle surface positioned to carry a semiconductor die, the supportpaddle having an opening extending from the paddle surface through thesupport paddle.
 20. The leadframe of claim 19 wherein the paddle surfaceincludes a single, continuous surface that encloses the opening.
 21. Theleadframe of claim 19 wherein the paddle surface includes multiplespaced apart paddle surface portions positioned outwardly from theopening.
 22. The leadframe of claim 21 wherein the wherein the paddlesurface includes first and second spaced apart paddle surface portionspositioned on opposite sides of the opening.
 23. The leadframe of claim21 wherein the paddle surface includes first, second, third and fourthspaced apart paddle surface portions positioned around and outwardlyfrom the opening.
 24. A semiconductor system, comprising: asemiconductor die having multiple bond sites; a support paddle having apaddle surface carrying the semiconductor die, the support paddle havingan opening extending from the paddle surface through the support paddle;a plurality of leadfingers positioned outwardly from the support paddle;and conductive connectors coupled between the leadfingers and the bondsites.
 25. The system of claim 24 wherein the paddle surface includes afirst portion on one side of the opening carrying the semiconductor dietoward a first edge of the semiconductor die, and a second portion on anopposite side of the opening carrying the semiconductor die toward asecond edge of the semiconductor die opposite the first edge of thesemiconductor die.
 26. The system of claim 25 wherein the first andsecond portions of the paddle surface are spaced apart from each otherand elongated along generally parallel axes.
 27. The system of claim 26wherein the paddle surface includes first, second, third and fourthspaced apart portions positioned around and outwardly from the opening,with each of the portions carrying the semiconductor die toward one offour corners of the semiconductor die.
 28. The system of claim 24wherein the paddle surface has a generally frame-type shape around theopening.
 29. The system of claim 24, further comprising an encapsulantdisposed at least partially around the semiconductor die, the supportpaddle, the leadfingers and the conductive connectors.
 30. A method formanufacturing a semiconductor system, comprising: receiving at leastpart of a support paddle in a recess of a semiconductor die, thesemiconductor die having a first surface with the recess and a secondsurface facing opposite from the first surface; and attaching thesupport paddle to the semiconductor die with the support paddle in therecess.
 31. The method of claim 30 wherein the support paddle is aportion of a leadframe having a frame portion and a plurality ofleadfingers extending from the frame portion, and wherein the methodfurther comprises: positioning the leadfingers proximate to thesemiconductor die as the support paddle is received in the recess;electrically connecting the leadfingers with bond sites of thesemiconductor die using wirebonds; disposing an encapsulant around thesemiconductor die and the leadframe; and removing the frame portion ofthe leadframe.
 32. The method of claim 30 wherein receiving at leastpart of the support paddle in the recess of the semiconductor dieincludes receiving the support paddle with an outwardly facing surfaceof the support paddle flush with or recessed from the first surface ofthe semiconductor die adjacent to the recess.
 33. The method of claim 30wherein the recess is a first recess and wherein receiving at least partof the support paddle includes receiving a first portion of the supportpaddle in the first recess and wherein the method further comprisesreceiving a second portion of the support paddle in a second recessspaced apart from the first recess.
 34. The method of claim 30 whereinthe recess extends around a periphery of the semiconductor die, andwherein the support paddle has a support surface with a generallyframe-type shape disposed around a central opening, and wherein themethod further comprises positioning a central portion of thesemiconductor die in the central opening of the support paddle.
 35. Themethod of claim 30 wherein the recess includes at least one recess atfour spaced apart corners of the semiconductor die, and whereinreceiving at least part of the support paddle in the recess includesreceiving four spaced apart paddle surfaces of support paddle inindividual portions of the at least one recess at the four spaced apartcorners of the semiconductor die.
 36. A method for manufacturing asemiconductor system, comprising: positioning a semiconductor dieproximate to a leadframe, the leadframe having a frame member, aplurality of leadfingers connected to and extending inwardly from theframe member, and a support paddle positioned inwardly from theleadfingers, the support paddle having a paddle surface and an openingextending from the paddle surface through the support paddle; attachingthe support paddle to the semiconductor die with the opening facingdirectly toward the semiconductor die; electrically connecting thesemiconductor die to the leadfingers; and separating the frame memberfrom the leadfingers and the support paddle.
 37. The method of claim 36wherein the semiconductor die includes recesses facing toward thesupport paddle, and where the method further comprises positioning thesupport paddle in the recesses of the semiconductor die, and whereinattaching the support paddle includes attaching the support paddle tosurfaces of the semiconductor die in the recesses.
 38. The method ofclaim 36 wherein attaching the support paddle to the semiconductor dieincludes attaching multiple spaced apart paddle surfaces of the supportpaddle to corresponding portions of the semiconductor die.